>> -----Original Message----- >> From: Matthew Reath [mailto:m...@mattreath.com] >> Sent: June-11-11 11:22 PM >> To: Randy Carpenter >> Cc: nanog@nanog.org >> Subject: Re: Question about migrating to IPv6 with multiple upstreams. >> >> Standard IP routing, the default gateway of the network can decide based >> on a route entry whether to send it to the cable modem or send it to the >> firewall. > > If the source block is not routed via both connections it won't work > without > NAT. I had this same problem trying to use my ISP's native v6 over PPPoE > and maintain a tunnel as backup since it was still pretty flaky as they > were > testing it at the time ... no way a residential ISP is going to route 3rd > party blocks for all their customers, and no chance the tunnel provider > was > going to route the block my ISP assigned me either ... with no NAT66 in > Tomato/ddWRT/etc it was 100% impossible to have multiple connections ... > >
I guess I'm a little confused on the setup. You have a firewall with a connection to a local LAN, another connection to customer network(s), and a third connection to the Internet via cable modem? You have NAT setup to NAT your Local LAN out to the Internet and to the customer network? A customer network device would use the outside IP on the customer network connection to communicate with devices in the Local LAN? I think it makes more sense to me now. -- Matt Reath CCIE #27316 (SP) m...@mattreath.com | http://mattreath.com Twitter: http://twitter.com/mpreath
